Feeds

McAfee slaps Trojan warning on MS Office Live

Friendly fire from update

Choosing a cloud hosting partner with confidence

McAfee has apologised after an anti-virus update released on Monday night incorrectly identified a plug-in for Microsoft Office Live Meeting as a Trojan.

The signature update file mistakingly flagged LMCAPI.exe (a component of Live Update) as a Trojan called Swizzor. As a result the component was incorrectly deleted from thousands of desktops at one huge multinational, staffers from which informed us of the problem but requested anonymity. Techies at the firm had to roll out new versions of Live Update as well as an updated signature file that avoids the false alert.

In a statement, McAfee said the snafu affected only a "small percentage" of its enterprise customers.

The issue was rapidly identified and corrected in the signature release on Tuesday 5th August, with any customer contacting McAfee prior to the release of the corrected signature being given an additional DAT file that suppressed this incorrect identification.

McAfee Avert Labs aims to maintain a high-level of proactiveness and accuracy in its generic detection signatures and to minimise false positives, while making any required corrections as rapidly as possible. McAfee would like to apologise to any customers affected by this issue.

Faulty anti-virus signature updates are a generic problem faced by all security vendors from time to time. Previous examples have included a Kaspersky update quarantining Windows Explorer, AVG crying wolf at Adobe Reader and, more recently, both CA and McAfee decided that legitimate JavaScript apps were malign.

These are three examples of a problem we've written about many times in the past and for which no ready solution is apparent. Effects vary by environment and miss-diagnosed application but can run to anything from the automatic deletion of a component no-one misses to locked-up workstations in the worst cases, which are mercifully rare. ®

Beginner's guide to SSL certificates

More from The Register

next story
Russian hackers exploit 'Sandworm' bug 'to spy on NATO, EU PCs'
Fix imminent from Microsoft for Vista, Server 2008, other stuff
FYI: OS X Yosemite's Spotlight tells Apple EVERYTHING you're looking for
It's on by default – didn't you read the small print?
Microsoft pulls another dodgy patch
Redmond makes a hash of hashing add-on
'LulzSec leader Aush0k' found to be naughty boy not worthy of jail
15 months home detention leaves egg on feds' faces as they grab for more power
Forget passwords, let's use SELFIES, says Obama's cyber tsar
Michael Daniel wants to kill passwords dead
Kill off SSL 3.0 NOW: HTTPS savaged by vicious POODLE
Pull it out ASAP, it is SWISS CHEESE
Facebook slurps 'paste sites' for STOLEN passwords, sprinkles on hash and salt
Zuck's ad empire DOESN'T see details in plain text. Phew!
prev story

Whitepapers

Forging a new future with identity relationship management
Learn about ForgeRock's next generation IRM platform and how it is designed to empower CEOS's and enterprises to engage with consumers.
Cloud and hybrid-cloud data protection for VMware
Learn how quick and easy it is to configure backups and perform restores for VMware environments.
Three 1TB solid state scorchers up for grabs
Big SSDs can be expensive but think big and think free because you could be the lucky winner of one of three 1TB Samsung SSD 840 EVO drives that we’re giving away worth over £300 apiece.
Reg Reader Research: SaaS based Email and Office Productivity Tools
Read this Reg reader report which provides advice and guidance for SMBs towards the use of SaaS based email and Office productivity tools.
Security for virtualized datacentres
Legacy security solutions are inefficient due to the architectural differences between physical and virtual environments.